deHi, 

I have a situation like this: 

 1 Service task with 3 demand lines as you can see in the pic.

I have several technicians who could meet this case, however for the PSO the activities are unallocated. 
The PSO does not allocate the activities because it considers that ALL the skills (those on ALL 3 lines) are sent to the PSO as needed for ALL activities. 
How can I send to the PSO, for that single line only the skills that are needed and not all those needed for entire task? 
I hope I have managed to explain myself.
I attach further images for more details:

I know Res:54 is eligible for activity 121: