Role secr. promotor vs. chairgroup secretary

What is the difference between the role Secretary of promotor and Chairgroup secretary in Hora Finita? Find out which role to use for which action:

Hora Finita action
Secretary of promotor role
Chairgroup secretary role
Set / edit date of annual interview
yes
no
Review training activities
yes
no
Book PhD ceremony date
yes
yes
Propose members assessment committee
yes
no
Generate courses document
no yes
Make PhD registration definitive
no yes
Edit title PhD project
no yes
Propose change supervision team
no yes
Adjustment promotion premium
no
no
Adjust end date PhD project
no
no