Yes, you can achieve this in Odoo by creating computed fields for the number of days and weeks. Here’s a basic example of how you might set this up:

from datetime import datetime

def _days_between(self, cr, uid, ids, field_name, arg, context=None):

    res = {}

    for cur_data in self.browse(cr, uid, ids, context=context):

        st_date = datetime.strptime(cur_data.st_date, "%Y-%m-%d")

        en_date = datetime.strptime(cur_data.en_date, "%Y-%m-%d")

        res[cur_data.id] = abs((en_date - st_date).days)

    return res

_columns = {

    'st_date': fields.date('Start date'),

    'en_date': fields.date('End date'),

    'days': fields.function(_days_between, type='char', string='NoD'),

}

In this example, st_date and en_date are the start and end dates, and days is a computed field that calculates the number of days between these two dates.

If each person inputs the number of days per week, you could create a similar function to accumulate these inputs over a month. However, the exact implementation would depend on how your Odoo system is set up and how the data is being inputted.

Please note that this is a simplified example and might need to be adjusted based on your specific requirements and Odoo setup.