Go to 6:25.
Creo command search can translate solidworks commands to Creo. So just type in "Isolate" and the Creo command is shown. Layers and simplified reps are useful but not as simple as "show-only" which is a "one-click" just like many other software.
I think everyone overlooked this simple answer because these show/hide "eyeball" icons are universal to many software. Just in case... another basic function is to activate the part you want to work on.
Oh cool! The command is not working for me though. Clicking on the search result doesn't do anything, and after adding it to my shortcut menu, it is greyed out. What am I missing?
What version of Creo do you use?
Also, possibly you need creo helpcenter installed. Clicking the search should open a text box to the left.
Make sure you are in an assembly and picking parts from the model tree. The show-only should pop up for both left and right clicks.
Here is a good work around I came up with.
Creo 4 does not seem to have a "hide all parts" so instead use a "hideall" mapkey that will make it pretty quick to do isolate. I used the F8 key for the mapkey. So the process is hit F8, then select the parts to unhide, then select unhide.
It works by searching for all *.prt in the model tree (binoculars), adding to the current selection (+) then hide, then delete/clear the *.prt from the model tree search. (you can record this yourself or use the "code" below.)
Unfortunately Creo does not remember what was selected before hitting the mapkey (F8) so it has to be 2 steps instead of 1.
You could just add this to your config.pro file.
mapkey $F8 @MAPKEY_LABELhideall;\
mapkey(continued) ~ Update `main_dlg_cur` `PHTLeft.simple_search_ph.ss_key_input_panel` \
mapkey(continued) `*.PRT`;~ Command `ProCmdSimpleSearch` ;~ Command `ProCmdSSApplyResult` ;\
mapkey(continued) ~ Command `ProCmdViewHide` ;~ Command `ProCmdSSClear`;