In his Cantate da camera a voce sola, op. 1, Gasparini printed out some of his suggestions for the basso continuo realization, both of which, according to him, should be used with discretion:
1) the addition of diminutions to the bass part (below: left image and right image from bar 4) - in those cases, he kept the simple bass as well "for convenience or ease of accompanying";
2) the use of embelished passages played by the right hand when the singing voice stops (below: right image, bars 2-3).
He mentions in the preface that these passages could also be useful for the archlute or cello.
Note that, in order to play "as many notes as possible in order to bring out greater harmony” in the passage from bar 5 on the image on the left, one might need to play higher than the singer or double the voice, a practice discouraged by Gasparini.