Property share inherited 2014, bought out remaining share 2020

I inherited 50% of a property with my sister in 2014 and bought her share of the property in 2020. How do I go about entering this information into CGT calculator on the gov website as it only allows me to either have inherited or bought a property. Obviously the value in 2014 was very different to the value in 2020 and costs were incurred in the purchase in 2020.

Hi Carrie100,

Your acquisition cost for the property will be made up of 50% of the market value in 2014 when you inherited it plus the purchase price in 2020 when you
acquired your sister's share.  
Costs incurred in the purchase in 2020 can be claimed.  
Please see CG15250 - Expenditure: incidental costs of acquisition and disposal regarding allowable costs.

Thank you.