Access rights configuration to allow adding work on a Ticket

Hello,

We've made some changes to the default access rights parameters in order to comply with our different use cases.
However we now have Team Members unable to log work on a Ticket : the "dispatch work" button is hidden for users with TM profile (no issue for other profiles).

 

After checking the configuration, it seems that I have to set the parameter :
Specific access > Work visibility = ALL

=> However I would like to keep it as "Only validated", but still allow TMs to log work on a ticket.
Would this be possible ? 


My configuration as follows (for TM profile) :
- Global Parameters > only responsible works on ticket = NO
- Specific access > Work visibility = ALL (doesn't work if set to "Only validated")
- Specific access > Edit assignments = NO 
- Specific access > Change validated data = NO
- Specific access > Can change resource parameter = NO
- Access data (project-dependent) > Tickets = Manager
 

That does certainly sound right of course

But what I find odd is that with the configuration "only validated visible" : 
- I can log work on activities
- I cannot log work on tickets

Or is there something incoherent in my config ?