Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Did the Will say anything about when the property could be sold?
Has the property already been transferred into your joint names?
In that case the three of you own the property on the basis of a "Trust for Sale" and that Trust for sale can be called in at any time.
This means that you can apply to the Court for an order for Sale using the Trusts of Land and Appointment of Trustees Act - which will be granted, and an Order that the third person mays 'Occupational " rent for your share of the property
The process is described here
I hope that this is of assistance - please ask if you need further details