I've RTFM..... that's why I'm here.
1 - Use Pulse Period 1
When activated, the output will remain on for the duration of the
‘Pulse Period 1’ timer (see page 63 for details).
2 - Use Pulse Period 2
When activated, the output will remain on for the duration of the
‘Pulse Period 2’ timer (see page 63 for details).
3 - Use Pulse Period 3
When activated, the output will remain on for the duration of the
‘Pulse Period 3’ timer (see page 63 for details).
As above, pulse is a hold on timer, then stays restored