Some of the people whose clashes you are working don't have a ClashWise account — a subcontractor, a specialist, the person who actually owns the ductwork. You can hand one of them a lane for the length of the meeting, with a link, and no account.
They see their lane. They can work it. They see nothing else.
What you need first
- A live session with the room split by responsible contact. A guest pass is that contact's assignment, so only a contact lane can be given away — a lane dealt out by level or discipline has nobody attached to it, and the Invite button doesn't appear on one.
- An email for the person. Normally that's the contact's email in your clash matrix; if the lane's contact has no email — or someone else from that company is standing in — you can send the invite to one of the session's attendees instead. Either way the pass still opens exactly that contact's lane.
- You must be the coordinator who started the session, or whoever holds the wheel.
Sending the invite
On the coverage board, the eligible lanes carry an Invite button. Click it and ClashWise mints a pass, emails the join link to the guest, and shows you the link too — with the guest's name and the lane it covers.
The copy is your fallback and your fast path: mid-meeting the link is often quicker in the Teams chat you're already in than in anyone's inbox, and if the email couldn't be sent the message says so and hands you the link to deliver yourself.
The lane is handed over the moment you invite. It shows the guest's name on the board for everyone.
What the guest sees before entering
After the link is exchanged for guest access, ClashWise shows a short Your access brief before it loads the model or places the guest in the live room. The brief names the session, the guest, the session timing, and the exact lane they can see. It also lists the actions the pass allows and explains that attendance and contributions are recorded under their name.
The guest chooses Enter live session to load their lane and join the room. Until they do, they do not appear as present. ClashWise remembers that choice for this session on that browser, so reopening the same link goes straight to the room. Your access stays visible in the guest bar if they want to read the brief again.
What the link is
The link is the credential. There is no password and no code, so:
- Anyone holding the link can use it. Treat it like a door key: it's emailed to the person it names — if you re-share it yourself, use a direct message, not a group channel you don't control.
- It is shown once. ClashWise doesn't keep a copy you can go back and read. If it's lost, invite again — which mints a fresh link and revokes every earlier pass this session held for that contact.
- It dies with the session. Ending the session revokes every pass on it immediately. A pass also expires on its own after twelve hours if the meeting is abandoned.
What a guest can do
A guest is a real participant in their lane, not a spectator:
- See the clashes on their lane in the 3D viewer, and nothing else in the set.
- Set a clash's priority and status.
- Mark clashes reviewed.
- Flag a clash for discussion, so it lands on the room's agenda at Regroup.
- Add comments and capture & markup screenshots, straight into the session record.
- Take the wheel and lead the walkthrough, like anyone else in the room.
- Appear on the roster with their name, and point at the model.
Everything they do is recorded to the session exactly as a member's edits are, with their name against it, and flows into the minutes and the PDF.
What a guest cannot do
Everything else. The pass opens their lane and nothing more — they cannot reach the rest of the clash set, other sessions, your organization, reports, exports, the AI, or any part of the API. Reassigning their lane to someone else cuts their access off, mid-meeting, without you having to revoke anything.
They cannot take or switch to another lane. Their lane is part of the credential itself, unlike a personal attendee link or shared session link, whose guest may claim any open lane while present in the split room. If the room regroups and starts a new split, the old lane is retired and the fixed-lane guest is removed; send a new lane invite from the new coverage board.
They also cannot change a clash's responsible contact, which would move work off their own lane or pull someone else's onto it.
Re-inviting
Invite again on a lane a guest already holds and the button reads Re-invite. It mints a new link, revokes the previous one, and removes whoever was holding it from the room. Use it if a link went to the wrong person, or the right person lost it.
Limits
Your organization has a monthly allowance for guest passes: the current Pro and Business allowances are shown on the pricing page and are unchanged by live-session capacity. Up to 10 guest-assigned lanes can be active in a session; that is a lane-invite rule, not a ceiling on every guest in the room.
The live room has one combined people limit: 15 on Pro and 25 on Business. The host, members, lane guests, personal-invite guests, and shared-link guests all count together. Guests are not seats: inviting someone never consumes a paid editor licence, and a guest cannot substitute for a member. An invitation does not reserve a place; admission happens when the guest enters the live session.
Tips
- Invite at the point you split, not when you reach their clashes — a guest who arrives at the start has the whole parallel stretch to work in.
- Send the link in a direct message, not a channel. It's a key.
- Check the board for their avatar before assuming they joined; a link sent is not a person present.
- If someone needs more than their lane, they need an account, not a wider pass. That's the boundary the pass exists to hold.
FAQs
Does the guest need to install anything or sign up? No. They open the link in a browser, review their access, and choose Enter live session.
Can I invite someone who isn't in my clash matrix? Onto a lane, yes — if they're on the session's attendee roster. The pass still opens the lane contact's clashes; the attendee is simply the person working them. And anyone at all can join the meeting itself by a session invite — see Inviting People to a Session.
What happens to their work when the session ends? It stays. Everything a guest recorded belongs to the clash set exactly like a member's edits — the session ends, their access ends, the work remains.
Can two guests share one lane? No. Inviting a second person to the same lane replaces the first.
Why is there no Invite button on my lanes? Either the room was split by something other than responsible contact, or you're not the coordinator or the driver. Both are shown on the session bar.
Related topics
- Splitting the Room to Work in Parallel — dealing the clashes out into lanes in the first place.
- Inviting People to a Session — invites to the whole meeting, rather than one lane.
- Working Together in the Room — the roster, the wheel, and following the driver.
- Clash Matrix — where the contacts and their email addresses live.