The installation wizard is straightforward. Stick to the default installation path unless your IT policy requires otherwise.
It sounds like you may be referring to a legacy or internal tool—possibly related to from Google, which was deprecated in 2020, or an internal viewer used by a specific web team. I don't have verified information about a current or safe download source for such a tool. nacl web team easy viewer download
For dedicated NaCl lattice work, the remains the most balanced choice between simplicity and power. The installation wizard is straightforward