Hi got help from z9962 with a formula to hide part of data. then I found that I had to do an exception and added the first row to the formula and this works fine.

if {AO.MOT} = "MEK/DAGREP" then {AO.MOT} else
IF instr({AO.MOT},"/")>0 THEN
left({AO.MOT},instr({AO.MOT},"/")-1)
ELSE
{AO.MOT}

Now I found some more to exclude but how do I add more?
I got MEK/DAGREP now but want to add MEK/POOL and maybe some more later on

No, didn't work. Only displays MEK now. The problem is that I would like to separate them. There are MEK/DAGREP that means repair/group of repairmen then I want to show them but if it is MEK/JAMES it means repair/single repairman. I don't want to display name on single user just MEK, but if it is a group of repair I want to show it like MEK/DAGREP.

Example I want all to show just MEK except if its MEK/DAGREP or MEK/POOL or even if its another startword like ELC/DAGREP. I want to specify them individualy.

I hope I didn't confuse you with this explanaition, got a little dizzy myself when I wrote it

I think there is something wrong with the data in POOL, I tried with another and that worked perfectly, like this:

if {AO.MOT} = ["MEK/DAGREP","PLAT/SVETS"] then {AO.MOT} else
IF instr({AO.MOT},"/")>0 THEN
left({AO.MOT},instr({AO.MOT},"/")-1)
ELSE
{AO.MOT}

If I switch PLAT/SVETS to MEK/POOL it shows only MEK

Thank you for your efforts...