Drawing sub-fields on mobile is iOS only at the moment. Sub-field on Android will come early 2023.
Now you divide your fields up into smaller areas on the mobile app as well as web.
How to draw a sub-field:
Tap the field on the map
Select "ADD SUB-FIELD"
Draw a boundary shape using the pin tool.
You can draw as many shapes as you like. Your shapes will be cut out for the main field.
When you are finished tap save.
The sub-fields will now be part of your parent field.
There are more sub-field options on fieldmargin web platform. On web you can also, slice, cut-out and add margins.
Sub-fields drawn on mobile will show up on the web-platform and vice-versa.
If you have any questions at all we are here to help. Please contact firstname.lastname@example.org.