a - package installation

library(finddxtemplate)

Install the package from the command line

if (requireNamespace("remotes")){install.packages("remotes")}
remotes::install_local(path = "path/to/finddxtemplate_0.1.0.tar.gz", 
                       repos = "http://cran.rstudio.com", 
                       type = "source")

Install the package graphically

if (requireNamespace("remotes")){install.packages("remotes")}
# a window opens and asks to choose the package in tar.gz format
remotes::install_local(path = file.choose(), 
                       repos = "http://cran.rstudio.com", 
                       type = "source")