https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273755#M142285 If you are referring to Launching 2 (or more) AC sessions side by side the answer is yes. After opening the first one select Open or New and on the window click on the option for "Launch a new instance of ARCHICAD" Wed, 07 Mar 2018 12:31:50 GMT Eduardo Rolon 2018-03-07T12:31:50Z https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273754#M142284 <DIV class="actalk-migrated-content"><T>Hi, <BR /> <BR /> Cant we open AC 21 side by side in mac machine?<BR /> <BR /> If yes, how to open.<BR /> <BR /> Thank you.</T></DIV> Wed, 07 Mar 2018 11:10:17 GMT https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273754#M142284 Roopa A 2018-03-07T11:10:17Z https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273755#M142285 If you are referring to Launching 2 (or more) AC sessions side by side the answer is yes. After opening the first one select Open or New and on the window click on the option for "Launch a new instance of ARCHICAD" Wed, 07 Mar 2018 12:31:50 GMT https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273755#M142285 Eduardo Rolon 2018-03-07T12:31:50Z https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273756#M142286 <BLOCKQUOTE>Roopa wrote:<BR />Cant we open AC 21 side by side in mac machine?</BLOCKQUOTE> There is a setting in "Work environment". See screenshot below (I don't have an English version of AC installed, but you should be able to figure it out).<BR /> <BR /> If checked, a new instance of AC is opened if you double-click a file in Finder for example. Thu, 08 Mar 2018 07:53:49 GMT https://community.graphisoft.com/t5/Modeling/AC-for-mac/m-p/273756#M142286 Ole 2018-03-08T07:53:49Z