Support multiple feature selection within single form submission

[manjitapandey]

Is your feature request related to a problem? Please describe. I am trying to upload xlsx file where there is the need for selection of more than one feature. The building feature and road connecting that building. The another case could be selection of main building in case we are surveying associated building.

Describe the solution you'd like User should be allowed to select multiple features. This increases the use case on FMTM for multiple field surveying scenario. May be we could store the geojson of only the entity we are surveying and in case of main feature, we can just store the feature id.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context This is the user's requirement from the Janakpur field mapping activity. Survey_ready_form (12).zip