Like other tools do it with the doers

Use the template

Start with any one of S/I/P/O/C

Its easier to go with output/s, from their go-to who receives

then produce this output, what you get and from whom

Lastly process - this is high level

avoid decision-making boxes, if possible

stick to 5-7 activity boxes ( use verbs as starting ..do /make/edit/review etc)

Confirm with the team that the capture is correct

you may now mark the scope of the project on the slide

Remember - this is just a simple presentation and agreement tools, don't start the analysis with this. 

For analysis create more detailed level process maps, preferably cross-functional / swim lane maps with data