Installation of DWSIM latest version on my MacBook pro

I downloaded the DWSIM freeware from the website and could not install it as i got a message saying that Mac could not check this for malicious software .

Please tell me how to install this on my Mac Book . Screen shot attached .

DWSIM 16-05-21, 10:16 p.m. ssmazumdar
This is to do with the security settings of your system. You will have to override the mac security settings to open the app. Please follow the article: https://support.apple.com/en-us/HT202491
18-05-21, 1 p.m. Priyam_Nayak

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