Pandas is already included in the Python3 embedded in QGIS for Windows.
You still need to install dbf module in this embedded Python. For that:
* Open a file explorer and go to your QGIS installation directory (something like `C:/Program Files/QGIS 3.10`)
* Right-click `OSGeo4W` command file and select `run as administrator`.
* In the freshly opened command line window, run those two commands:
```
py3_env
python3 -m pip install dbf
```
### GNU/Linux
Simply install those modules with your package manager. For example, on Debian/Ubuntu/Mint/..., you can run this:
```
sudo apt install python3-pandas python3-dbf
```
If you don't have administrator rights and pip3 is installed on your machine, you can install those modules by running:
```
pip3 install --user pandas dbf
```
## Install the plugin archive
Open QGIS, go to "Plugins -> Manage and install plugins". Find the tab named "Install from ZIP". Browse your files to find the zip archive and click "Install plugin".