How to make the first resource unavailable, when the second related resource is reserved?

You can block the time of one resource when other resources are reserved. To do this, select these blocking resources in the settings of the target resource.
If 5 shares are reserved in the blocking resource, 5 shares will also be blocked in the target resource. And in case when exclusive price option was reserved, then an entire target resource is blocked.
In these cases, reservations are not duplicated. If you cancel the order in the blocking resource, the time will be released in target resource as well.
Resources thus can mutually block each other. Resource types and their schedules may not match.
Didn't find the answer to your question?
Feel free to ask it at