set_datetime_cols: Set DateTime Columns
In rbenvo: Built Environment Objects

When exposure time and lag exposure time need to be calculated the measurement date, and start/stop date columns can be provided to the benvo and base_benvo functions as optional arguments. Note that these columns will be converted to Date objects if they're not already.

set_datetime_cols(
  measurement_date = NULL,
  start_date_col = NULL,
  stop_date_col = NULL
)

`measurement_date`	column string for the date at which a subject was measured
`start_date_col`	column string for the date at which a subject/bef moved to their corresponding location
`stop_date_col`	column string for the date at which a subject/bef stopped having exposure at the corresponding location.