join_adm_boundaries: Add admin boundaries to dataframe and convert to an sf object...
In afrimapr/WiGISKeDataViz3:

Add admin boundaries to dataframe and convert to an sf object to use in mapping and other analysis

1	join_adm_boundaries(adm_column = "orgunitlevel1", boundaries_sf, data_df)

`adm_column`	Name of the column in dataframe/tibble that contains the admin level names. Default: orgunitlevel1
`boundaries_sf`	SF object containing the admin boundaries for the relevant admin level. Obtained by running get_admin_geoboundaries()
`data_df`	Dataframe or tibble containing the data that needs to be converted to sf object. Obtained by running get_pregnancy_data() and normalise_pregnancy_data()