Task visual difference on source calendar (EG: Checkmark)

I use Todoist to manage my tasks with due dates. Inside on Morgen, I like to plan my Todoist' tasks in multiple sessions depending of their complexity and durations. Then, in my mobile phone, I prefer sometimes just checking my calendar events with its default calendar application widgets. But I can't notice the difference between my Todoist synchronized tasks (GCal integration) and "sessions" tasks/events created inside Morgen, because they have the same event title.

I would like to automate a modification of each session of a task to begin with the word "DO: " or "SESSION: ", or some mark replacing the "⏹️", with the objective to difference the task session from the regular event from Todoist on my calendar (GCal sync) out of Morgen.

PSDT: I know that already exist the Morgen Mobile app, but it keeps lagging and not showing my events in a confortable way in Android.