This article provides instructions for adding add-ins to SharePoint Online or Project Online sites. The steps include logging into the site, clicking the gear icon to access the settings menu, selecting "Add an app" which will redirect to the Your Apps page, clicking "SharePoint store" to access available add-ins, searching for and selecting the desired add-in, clicking "trust it" to complete the installation, and verifying the add-in is now available on the Site contents page.

1. How to Add“Addins” onSharePointOnlineorprojectOnline
Thisarticle isabout adding“Addins”on SharePointOnline orprojectOnline,indaytoday taskor
monthlytaskwithSharePointonline we needtoaddsome of add-insonSharePointonline or Project
online.
Whenwe wentto add the same add inswithMS supportblogsite,we foundsome difficultytodothisas
there wasnot screenshotsor details.
Today I am writingthisabouthowto addSharePointorProjectonline add-inswithscreenshots:
 Loginto the SharePointorProjectonline site withauthorizeduseraccountandpassword.
 Nowclickon the gear box on the Top site of the page inrightside.
 Nowclickon add an app optionfromlistedoptions,afterclickingonthe same itwill redirect us
Site contentsandYour appspage.

2.  Here we needto selectSharePointstore fromleftside of screenunderthe tabof your apps.
 Once you will clickonthe same,page will redirecttoSharePointstore page,where we needto
searchapp or add INSwhichwe want to install.
 Once search resultcame onthe screenclickonthe searchedObjectandaddit.There will be
free appsand add insandchargeable alsosodecide asper yourrequirementandgoahead.

3.  We needtoclickon trust itoptionto addsuccessfullyonthe site page.
 Afteraddingthe selectedandaddedAppwillbe showingonyourSite contentpage.
Thanks