Hi,
Go to your process chain at RSPC, select your chain and click on logs view.
if your chain is running now, you can see your logs of today.
your dtp step will be in yellow. if your chain doesn't have today logs then that will be triggered by manual.
Go to your dtp monitor and see the header tab.
There you can see the user id who triggered.
Based on used id also you can find. is it ran thru process chain or by manual.
user id - ALEREMOTE/BWREMOTE - then it ran thru process chain
User id - as some user name then that will be thru manual.
Thanks