Why does Omni Security sometimes appear to hang?
Omni Tools can be asked to manipulate huge amounts of data with a single mouse click. If you select all users and all companies and the make a change on a node near the top of the tree, the number of changes you have asked for could be very large. Please expect this to take a little time. Try making the same change to a single user and company, then multiple the time taken by the number of users and companies you wish to multi-select.