Yes, it is. The install wizard guides you through the 2 step install process (Main Release-> Translators) for version 5.0.
Just to be sure, please check the OPSWAT MetaDefender® Cloud scan report which analyses the file for malware threats. OPSWAT is a leading provider of cybersecurity products to protect critical infrastructure - both public and private.
Here are the file analysis results (last scanned April 8, 2022): https://metadefender.opswat.com/results/file/bzIyMDQwOExWdzk2TmNlenljZW90cjNnU3I/regular/multiscan
Note: Install_Wizard_DSM5.exe contains a self-signed code certificate generated by DesignSpark. This may cause certain anti-malware engines to flag it as a false-positive. We (DesignSpark) can assure you that the file is still safe for use and was checked prior to publishing. Please ensure you always download our software installers from the official DesignSpark website: https://www.rs-online.com/designspark/software