Install and activate farm solution:

First download the .wsp file from the solution page and save somewhere in SharePoint server
. Start “SharePoint 2010 Management Shell” from start menu.

Run this command: Add-SPSolution C:\Users\Administrator\Desktop\yourSolutionName.wsp

Go to Central administration – System settings – Manage Farm solutions (here you see the solution is available) – Click on the solution name – Deploy solution – Ok

The solution will be activated and you will soon see following status:

Use solution:

Go to site collection you want to use the solution. Click “Site Actions” – Site Settings – Site collection features – Make sure the solution is Activated. Otherwise click “Activate” in front of solution
.

Now the solution is activated. If it is a web part, you can use the web part at same way we use out-of-box web parts
. You will find a category called “Riz Webparts” in web parts list

.

Deactivate solution:

Go to site collection you want to use the solution. Click “Site Actions” – Site Settings – Site collection features – Click “Deactivate” in front of solution.

Uninstall/Remove solution:

Go to Central administration – System settings – Manage Farm solutions (here you see the solution is available) – Click on the solution name – Retract solution – Ok – Click on the solution name – Remove solution – Ok

The solution will not be in use and removed from SharePoint farm.