What is difference # Project ensemble models (from single projections) vs # Project ensemble models (building single projections) ?

[carlosbedson]

Dear helpful biomod2 people
Please may I ask what the difference is between these two modeling scripts
For me- I wish to create a current climate model and then use that with future climate values to project future species distribution.
However given these two modeling scripts - for current climate - I am not sure what the difference is between these two and which I should be using. Thank you for considering. Best wishes, Carlos

Project ensemble models (from single projections)

myBiomodEMProj <- BIOMOD_EnsembleForecasting(bm.em = myBiomodEM,
bm.proj = myBiomodProj,
models.chosen = 'all',
metric.binary = 'all',
metric.filter = 'all')

Project ensemble models (building single projections)

myBiomodEMProj <- BIOMOD_EnsembleForecasting(bm.em = myBiomodEM,
proj.name = 'CurrentEM',
new.env = myExpl,
models.chosen = 'all',
metric.binary = 'all',
metric.filter = 'all')